Ratty is a rat virus from the Mega Man Battle Network series that attacks by launching mini versions of itself (Rattons) that move in a straight line along the ground towards the player. These Rattons can turn once to seek its target. Rattys move around very fast, with stronger variants moving faster. When its HP is low enough, this virus opens its eyes widely and starts to move and attack much faster (the speed of the projectile remains the same).